Title:
【発明の名称】高分散光ファイバ
Document Type and Number:
Japanese Patent JP2584145
Kind Code:
B2
Abstract:
PURPOSE:To provide a high-dispersion optical fiber with the wavelength dispersion value per unit length increased and the loss per unit length reduced. CONSTITUTION:This high-dispersion optical fiber 1 is formed with a core 2 of pure quartz and the clads 3 and 4 of fluorine-added quartz. The difference in specific refractive index between the clad 3 and the core 2 is controlled to <=-0.6%, and that between the clad 4 and the core 2 is adjusted to <=-0.2%. The ratio of the diameter (b) of the clad 3 to the diameter (a) of the core 2 is preferably controlled to 1.7-2.5. A dispersion simulator low in loss is obtained. Although the number of parts to be set in a circuit to be tested is increased, the loss in the entire length of the whole circuit is kept low, and the transmission characteristic of even an intricate optical circuit can be investigated and subjected to an experiment.
Inventors:
TANAKA TAIICHIRO
SAKAI TETSUYA
WADA AKIRA
YAMAUCHI RYOZO
SAKAI TETSUYA
WADA AKIRA
YAMAUCHI RYOZO
Application Number:
JP11261991A
Publication Date:
February 19, 1997
Filing Date:
April 17, 1991
Export Citation:
Assignee:
FUJIKURA KK
International Classes:
C03C13/04; G02B6/036; (IPC1-7): C03C13/04; G02B6/22
Domestic Patent References:
| JP62501733A |
Attorney, Agent or Firm:
Masatake Shiga (2 outside)